Cloth cutting machine



(NoiModeL) 3 SheetsS heet 1. H. G. ROGOWSKI. CLOTH CUTTING MACHINE.

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H. G. ROGOWSKI. CLOTH GUTTING MACHINE.

Patented A a Sheets-Shet 2.

fabric over the pattern-plates.

UNITED STATES PATENT OFFICE.

I-IERMANN G. ROGOWSKI, OF NEW YORK, N. Y.

CLOTH-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 472,715, dated April 12, 1892.

Application filed May 14,- 1891 Serial No. 392,659. (No model.)

To a/ZZ whom it may concern:

Be it known that I, HERMANN G. ROGOWSKI, a citizen of the German Empire, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Machines for Cutting Cloth for Garments, of which the following is a specificattion.

This invention relates to an improved machine for cutting cloth or other fabrics for garments and other purposes by means of shaped cutting knives or dies; and the invention consists of a machine for cutting cloth, which comprises a'table having a number of slots, to which are applied a number of shaped cutting knives or dies, which are formed of sections, which together form the patterns to be cut from the cloth, the knife-sections being provided with bottom flanges, which are attached to the slots of the table. Springcushioned pattern-plates are supported by springs above the level of the cutting-edges of the shaped knives, the different layers of fabrics to be out being stretched over said pattern-plates and subjected to the pressure of a heavy roller that is drawn over the fabrics and pattern-plates, so as to depress the latter and cut the fabric by pressing the layers over the cutting-knives, the pattern-plates giving sufficiently for this purpose.

The invention consists, further, of certain details of construction which will be fully described hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure I represents a side elevation of my improved machine for cutting cloth and other fabrics. Fig. II is a vertical transverse section of the same on the line 2 2 of Fig. I, drawn on a larger scale. Fig. III is a plan view of the cutting-table, also drawn on a larger scale. Fig. IV is a detail vertical section of one of .the spring-cushioned pattern-plates. Figs. V, VI, and VII are details of the pressure-roller for cutting the different layers of fabric stretched over the pattern-plates. Figs. VIII and IX are a top view and an end view of the transverse frame for stretching the layers of Fig. X is a bottom view of a sectional pattern-plate. Fig. X1 is a detail horizontal section of one of the shaped cutting knives or dies; and Fig. XII is a vertical transverse section, drawn on a larger scale, through two adjacent cuttingknives or dies.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the supporting-frame of my improved machine for cutting cloth or other fabrics. On the frame A are supported suitable bearings for the transverse rollers a, on which is supported a table B, which is provided with a number of slots b, that serve for attaching the cutting-knives O. The table B is made. of cast-iron or other suitable material of sufficient strength to bear the strain exerted thereon, and is removed from the supporting-frame A when a new set of shaped cutting-knives has to be arranged on the same.

The shaped cutting knives or dies 0 are formed of sectional knives d, which are fastened to the table B by means of screw-bolts 1) through the slots b, said slots being so arranged that any required pattern can readilv be made up from the sectional knives d, which are provided in different shapes-straight, curved, angular, &c.so that any desired shape or pattern can be made up from the same. The knife-sections dare provided with bottom flanges d, which are either riveted to the lower part of the knife-sections cl or bent up from the same. One end of the knife-section d isbeveled, while the other end is grooved, so that the knife-sections interlock with each other.

It is preferable to use with each machine table B is removed from the supporting-frame Y A to a stand of about the same size, so that access is given to the table from all sides,

whereby the different shapes of patterns can be readily put together by attaching the fastening-screws of the knife-sections to the slots I of the table. At the inside of the so-shaped knives or dies 0 are arranged pattern-plates D, which are guided by means of rods D in the slots or openings of the table B, said pattern-plates being supported on spiral cushioning-springs D, as shown clearly in Fig. IV.

The pattern-plates D are made either of one piece of strong sheet metal or of sectional pieces which are connected by screw-bolts or slide-pieces, so as to be readily adjusted to the to which the ends of the different layers of fabric are attached. This clamping device is shown in Figs. VIII and IX. The fabrics while being stretched over the pattern-plates are unwound from rollers r, on which they are wound, which rollers are supported in bearings of an inclinedsupporting-frame A I at one endof themachine, the fabrics being passed over transverse guide-rods r of the supporting -,frame of the machine, and between'guide-rollersr over the pattern-plates D, to the opposite end of the-machine, where thelayers of the fabric are rigidly fastened bya suitableclamping device r Fig. I.

The frame Efor stretching the fabrics over the pattern-plates is composed of ashaft E,

having fixed sprocket-wheels E which areoperated by sprocket-chains F arranged at both sideso-f theinachine. The jaws e e are arranged at the, ends of arms efithat are strapped to the shaft E, and pressed together by means of spiral springs e applied to studs e at the opposite endsof thear ms 6 so that thetoothed jaws take a firm hold of the ends of, the fabric. When therefore the toothed clamping-frame E is-drawnover the machine bytheaction of the endless chainsF on the sprocket-wheelsE the, layers ofv fabric are tightly stretched over the pattern-plates D with, they arrive at the opposite QDdjof the table B, and arethere clamped by the device rate the end ofthe supporting-frame A. The traversingframeE is then removed from the supporting frame or moved back to the lefthand end of the samtaso as to be out of the way, asshown inFig. I.

The cutting of the superposedlayers of fab- E, the shaft of which is supported in springpressed bearings ff of slotted standards .F,

which are guided. in exterior longitudinal ways'f of the supporting-frame A, as shown in Fig. II. Thesupporting-standards ,F- are its ends with sprocket-wheels f which mesh guided over suitable sprocket-wheelsv F at the ends of the supportingframe A, and guided. in intermediate rollers f, as shown 1 clearly in Fig. I. Traversing motion is imfi parted by the chains F? to the pressurea'oHer 1 F by .meansof a suitable beltand cross-belt intermediate. sprocket- Q transmission and wheels F and chain F as shown clearly in Fig. I, so that the endless chains F can be moved in one direction or the other according as the pressure-roller F is to be moved forward or backward over the machine. The pressure-roller. F is made of anumber of sections which are composed of flanged iron cores g, that are splined to the axle of the roller, and of wedge-shaped wooden blocks g, which are arranged in longitudinal rows in such a inannerthat the blocks of two adjoining rows break joint with eachother. The Wedgeshaped blocks g of wood are turned off smoothly and form a covering for the roller that can be passed over the cutting-knives without dulling the same. From time to time the surface of the roller is turned off, so as to be made true again.

In place of the pressure-roller F described an intermediateplate of zinc orother pliable metal has to be interposed between the roller and thefabrics,saidsoft-mGtal plate preventing the dullingof the knives. Thecuttingedges of the knife-sections, are so arranged tat the inside of the same, as shown in Fig. XII,in.which one knife belongs to one cutcutting-die. By the close adhesion of the layers of fabric to the pattern-plates, produced by the tight stretching of the fabrics, thee-utting action of the knives is facilitated and expedited, When the sections of the cutting knives or dies are screwed to thetable, they are firmlybound together by means of asuitable band or hoop iron, which is passed around-the same and which is tightlyclamped together at the ends, as. seen in dotted lines in Fig. XI. This bindsthe knife-sections of one entire cutting frame or die together, so that they abut. against each other and offer the required resistance to the action of the heavy pressure-roller as the same passesover the fabrics. The cutting-knives may further be rigidly held together by interposing wedgepieces between the side walls of the supporting-frame A and the knives adjacent thereto,

7 which assists in securingthe knives arranged r-ic is accomplished by means ofv a heavy roller on the supporting-table B against lateral change of position. The intermediate spaces between the different cutting-dies may also be covered by-means of auxiliary spring-cushioned plates, as indicated indotted lines in v 3 Fig. III, so as to take up the remnantsof cloth connected by a rigid transverse brace-at their upper ends, while the shaft f is providedat that are cutoff fromthe patterns, which remnants can thereby be more conveniently re- V moved from the machine after the ,cuttingof with the'endless sprocket chains F that are 1 the patterns is accomplished andwith less danger of injury to the fingers by the sharp cutting-knives.

Having thus. described my invention, I claim as new and desire to secure by Letters Patent 1. The combination of a Supporting-{rattle having a horizontal table provided with a I number of verticalslots, cutting-knives arranged in sections and provided with L- shaped bottomfianges. resting on thetable, vertical fastening screw-bolts passing th-rough said a heavyiron roller may be used, in which case that their. vertical side is at the outside of, the {shaped cutting-die, while the tapering side is ding-die and the other knife. to the adjoining.

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flanges and certain of the slots in the table, and spring-cushioned pattern plates located in proximity to the knives and having depending stems passing through other of said slots, substantially as set forth.

2. The combination of a supporting-table, upright cutting-knives formed in sections and provided with bottom flanges, means for attaching said cutting-knives to the table in the form of a pattern, spring-cushioned patternplates arranged inside of the pattern formed by the cutting-knives, means for stretching the layers of fabric tightly over the patternplates, a pressure-roller, and means for moving the pressure-roller over the layers of fabrics to be cut, substantially as set forth.

3. The combination of a supporting-table, upright cutting-knives attached to said table and arranged so as to form cutting frames or dies, spring-cushioned pattern-plates arranged inside of the cutting frames or dies, means for stretching the layers of fabric over the pattern-plates, and means for clamping the layers of fabric to the frame, substantially as set forth.

4. The combination of a supporting-table, upright cutting-knives formingcuttingfram es or dies, attached to the said table, spring-cushioned pattern-plates located inside of the dies formed by the cutting-knives, a traversing pressure-roller supported on standards guided on the supporting-frame, sprocket-wheels on the shafts of the pressure-roller, and endless chains for moving said pressure-roller Over the fabrics, substantially as set forth.

5. In a machine for cutting patterns from fabrics, the combination of a supporting-table provided with slots, cutting-dies formed of knives having bottom flanges, fastening-bolts passing through the flanges of the knives and the slots of the table for securing the cuttingknives to the table, and a metal band or hoop passing around the bodies of the knives in each die and having its ends connected, substantially as set forth.

6. In a machine for cutting patterns from fabrics, the combination of a supporting-table with cutting frames or dies formed of knife sections attached to said table, said knife-sections being provided with groove-and-tongue joints at their adjacent ends, substantially as set forth. i

7. The combination, with a supporting-table, upright cutting-knives forming pattern frames or dies, attached to said table, springcushioned pattern-plates arranged inside of the cutting frames or dies, a traversing frame provided with sprocket-wheels and springactuated clamping-jaws for moving the layers of fabrics over the pattern-plates, and endless chains for drawing the traversing frame over the pattern-plates, substantially as set forth.

8. The combination, with a supporting-table, upright cutting frames or dies attached to said table, spring-cushioned pattern-plates arranged inside of said cutting-frames, guiding and stretching devices for the fabrics at one end of the supporting-table, a traversing frame provided with spring-actuated clamping-jaws for taking hold of the different layers of fabrics and stretching them over the pattern-plates, and means for clamping the fabrics arranged at the opposite end of the table, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

HERMANN G. ROGOWSKI.

Witnesses:

PAUL GoEPE CHARLES SOHROEDER. 

